DOI: 10.3724/SP.J.1146.2013.00227

Journal of Electronics & Information Technology (电子与信息学报) 2013/35:12 PP.2978-2984

Research on the Network Fault in Multistage Multi-plane Optical Switching Fabric

Fault in a rearrangeable multistage multi-plane Clos optical switching fabric network will change the non-blocking characteristics of the switching fabric and introduce traffic blockage. Based on analyzing the properties of the faults, a threshold-based limiting algorithm is proposed. Considering the combined fault effects to different layers, the algorithm finds out the traffic loads which can not be supported due to the fault. Those traffic loads are then limited in the outmost layer to achieve efficient scheduling of the following layers and to reduce the blocking probability. Simulation results show that the limiting algorithm can reduce the blocking probability effectively. With the deepening of the fault location and time slot increasing, the algorithm has a better performance.

Key words:Clos switching fabric,Network fault,Traffic,Blocking probability

ReleaseDate:2014-07-21 17:04:40